公开(公告)号：US5980833A

公开(公告)日：1999-11-09

申请号：US883785

申请日：1997-06-27

申请人： Katsuki Higaki ,  Shuzo Kudo ,  Hisao Ohnishi ,  Soichi Tabata ,  Osamu Okada ,  Yosuke Nagasawa

发明人： Katsuki Higaki ,  Shuzo Kudo ,  Hisao Ohnishi ,  Soichi Tabata ,  Osamu Okada ,  Yosuke Nagasawa

IPC分类号： G01N27/12 ,  G01N33/00 ,  G01N29/00

CPC分类号： G01N27/12 ,  G01N33/004 ,  G01N2291/02863 ,  Y10S428/902 ,  Y10T436/205831 ,  Y10T436/208339 ,  Y10T436/23

摘要： A carbon monoxide sensor including a gas detecting portion and at least a pair of electrodes, wherein the gas detecting portion includes a metal oxide represented by a following formula;Cu.sub.1-x Bi.sub.x O.sub.y(0

摘要翻译： 一种一氧化碳传感器，包括气体检测部分和至少一对电极，其中气体检测部分包括由下式表示的金属氧化物; Cu1-xBixOy（0

公开(公告)号：US06306351B1

公开(公告)日：2001-10-23

申请号：US09214322

申请日：1999-01-04

申请人： Shuzo Kudo ,  Katsuki Higaki ,  Hisao Ohnishi

发明人： Shuzo Kudo ,  Katsuki Higaki ,  Hisao Ohnishi

IPC分类号： G01N2700

CPC分类号： G01N27/12 ,  G01N33/0037 ,  Y02A50/245

摘要： The present invention relates to a nitrogen oxide detecting element. Although there has been a demand for effecting detection of a nitrogen oxide by using a semiconductor type gas sensor, no semiconductor type sensors have existed which can detect the nitrogen oxide with good selectivity against other interfering gases (CO, H2) for an extended period of time with good durability. Then, by causing a gas detecting portion to include an oxide containing more than a predetermined amount of Bi and maintaining this gas detecting portion at a temperature range where its electron-conductivity is exhibited, it has become possible to detect the nitrogen oxide.

摘要翻译： 本发明涉及氮氧化物检测元件。 尽管需要通过使用半导体型气体传感器来实现氮氧化物的检测，但是不存在半导体型传感器，其可以以较高的选择性对其他干扰气体（CO，H 2）的长时间检测氮氧化物 时间具有良好的耐久性。 然后，通过使气体检测部包含含有超过规定量的Bi的氧化物，并将该气体检测部保持在其电子传导性的温度范围，可以检测氮氧化物。

公开(公告)号：US5863503A

公开(公告)日：1999-01-26

申请号：US626007

申请日：1996-04-01

申请人： Shuzo Kudo ,  Hisao Ohnishi ,  Masamichi Ipponmatsu ,  Shoji Tanaka ,  Hisao Yamauchi ,  Satoshi Takano ,  Mitsunobu Wakata

发明人： Shuzo Kudo ,  Hisao Ohnishi ,  Masamichi Ipponmatsu ,  Shoji Tanaka ,  Hisao Yamauchi ,  Satoshi Takano ,  Mitsunobu Wakata

IPC分类号： G01N27/12 ,  G01N33/00 ,  G01N27/04

CPC分类号： G01N33/0037 ,  G01N27/12 ,  Y10T436/177692 ,  Y10T436/178459 ,  Y10T436/179228

摘要： A nitrogen oxide detecting sensor, according to the present invention, incorporates a gas detecting portion including, as a main component thereof, an oxide compound having electric conductivity or semiconductivity, the oxide compound having a crystal structure of 2212 phase and expressed generally as: Bi.sub.2 Sr.sub.2 (Ca.sub.1-x Y.sub.x)Cu.sub.2 O.sub.8.+-..delta. where 0.6.ltoreq.x 88.1%(b) {.SIGMA. I�2212!+.SIGMA. I�2201!}/.SIGMA. I�T!>94.8%(c) {.SIGMA. I�2212!+.SIGMA. I�Y.sub.2 O.sub.3 !} .SIGMA. I�T!>88.1%(d) {.SIGMA. I�2212!+.SIGMA. I�(Bi, Ca) O!}/.SIGMA. I�T! >88.8%where .SIGMA. I�2201! is a sum of diffraction peak intensity values based on the 2201 phase; .SIGMA. I�Y.sub.2 O.sub.3 ! is a sum of diffraction peak intensity values based on Y.sub.2 O.sub.3 ; .SIGMA. I�(Bi, Ca)O! is a sum of diffraction peak intensity values based on an oxide including one or both of Bi and Ca and excluding any other metal; and .SIGMA. I�T! is a sum of diffraction peak intensity values of an oxide including at least one of Bi, Sr, Ca, Y and Cu.

摘要翻译： 根据本发明的氮氧化物检测传感器包括气体检测部分，其包括作为其主要成分的具有导电性或半导电性的氧化物化合物，所述氧化物化合物具有2212相的晶体结构，并且通常表示为：Bi 2 Sr 2 （Ca1-x Yx）Cu2 O8 +/- delta，其中0.6 88.1％（b）{SIGMA I [2212] + SIGMA I [220]} / SIGMA I [T]> 94.8％（c） （SIGMA I [2212] + SIGMA I [Y 2 O 3]} SIGMA I [T]> 88.1％（d）{SIGMA I [2212] + SIGMA I [（Bi，Ca）O]} / SIGMA I [T]> 88.8 ％，其中SIGMA I是基于2201相的衍射峰强度值的总和; SIGMA I [Y2O3]是基于Y2O3的衍射峰强度值的总和; SIGMA I [（Bi，Ca）O]是基于包含Bi和Ca中的一种或两种并且不包括任何其它金属的氧化物的衍射峰强度值的总和; 并且SIGMA I [T]是包括Bi，Sr，Ca，Y和Cu中的至少一种的氧化物的衍射峰强度值的总和。

公开(公告)号：US5810984A

公开(公告)日：1998-09-22

申请号：US837746

申请日：1997-04-22

申请人： Shuzo Kudo ,  Hisao Ohnishi ,  Hisashi Sakai

发明人： Shuzo Kudo ,  Hisao Ohnishi ,  Hisashi Sakai

IPC分类号： G01N27/12 ,  G01N33/00 ,  G01N27/26

CPC分类号： G01N27/12 ,  G01N33/0037 ,  Y10T436/177692 ,  Y10T436/178459 ,  Y10T436/179228 ,  Y10T436/208339

摘要： A nitrogen oxide sensor and a method of manufacturing the sensor are disclosed. The sensor has a gas detecting portion including sensitive material having electric property thereof subject to change in association with presence of nitrogen oxide in gas and a pair of electrodes electrically connected with the gas detecting portion. The gas detecting portion includes, as a main component thereof, metal oxide compound represented by a general formula: Bi.sub.2 Sr.sub.2 (Ca.sub.1-x Y.sub.x)Cu.sub.2 O.sub.8+y (0.8.ltoreq.x.ltoreq.1; 0.ltoreq.y.ltoreq.1) and having the 2212 phase crystal structure and crystalline size greater than 100 .ANG..

摘要翻译： 公开了一种氮氧化物传感器和制造该传感器的方法。 该传感器具有气体检测部，该气体检测部包括与气体中的氮氧化物的存在相关联的具有电特性的敏感材料和与气体检测部电连接的一对电极。 气体检测部分包括由以下通式表示的金属氧化物作为主要成分：Bi 2 Sr 2（Ca 1-x Y x）Cu 2 O 8 + y（0.8≤x≤1;0≤y≤1 ）并且具有2212相晶体结构和结晶尺寸大于100安培。

公开(公告)号：US5734091A

公开(公告)日：1998-03-31

申请号：US805037

申请日：1997-02-21

申请人： Shuzo Kudo ,  Hisao Ohnishi ,  Hisashi Sakai

发明人： Shuzo Kudo ,  Hisao Ohnishi ,  Hisashi Sakai

IPC分类号： G01N27/12 ,  G01N33/00 ,  G01N29/00 ,  G01N27/04 ,  H01C7/00

CPC分类号： G01N27/12 ,  G01N33/0037 ,  G01N2291/02863 ,  Y10T29/41 ,  Y10T436/208339

摘要： A method of manufacturing a nitrogen oxide sensor for detecting a nitrogen oxide to be used in the field of e.g. reducing or decomposing nitrogen oxides, as well as such sensor and material suitable for manufacturing the sensor are disclosed. For manufacturing the sensor material, a precursor containing components for constituting the sensor material in a predetermined equivalent ratio of stoichiometry between chemical elements is prepared. First, the precurser is subjected to sintered to a preliminary sintering step. Then, the resultant sintered material is subjected to at least two cycles of main sintering step at 815.degree. to 848.degree. C. (T1) with an intermediate grinding step of the sintered material therebetween, thus obtaining the gas detecting portion comprised mainly of oxide compound having a composition represented by: Bi.sub.2 Sr.sub.2 YCu.sub.2 O.sub.8+y (0.ltoreq.y.ltoreq.1) and having the 2212 phase of crystal structure.

摘要翻译： 一种制造氮氧化物传感器的方法，所述氮氧化物传感器用于检测例如氮氧化物领域中使用的氮氧化物。 公开了减少或分解氮氧化物，以及适于制造传感器的传感器和材料。 为了制造传感器材料，制备了包含用于以化学元素之间的预定当量化学计量比构成传感器材料的部件的前体。 首先，将前体进行烧结至预烧结步骤。 然后，将得到的烧结材料在815℃〜848℃（T1）下进行至少两个主烧结步骤循环，其中烧结材料之间的中间研磨步骤由此获得主要由氧化物组成的气体检测部分 具有由Bi2Sr2YCu2O8 + y（0≤y≤1）表示并具有晶体结构的2212相的组成。